You can search for identifiers within the package.
in-package search v0.2.0
vlt
vlt.mt
vlt_ppx
Vlt_ppx.Exception
val expand : ctxt:'a -> 'b -> 'b
val extract : unit -> (Ppxlib__.Import.payload, Ppxlib__.Import.expression -> 'a, 'a) Ppxlib.Ast_pattern.t
val extension : Ppxlib.Extension.V3.t
val extension_alt : Ppxlib.Extension.V3.t